Ultra Running Hub Peoria, AZ, United States · Thursday, December 31, 2026
Across the Years, Last Person Standing
We hold no course length for this race — a timed or backyard event is measured by the clock, not the kilometre — so there is no Grit score to give you.
What the course asks
DUV results for the 2025 edition (36h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.
Typical conditions, December
Regional 2001-2020 average for December — NASA POWER, grid elevation 398 m. Not a forecast.
Results history
| Year | Race | Finishers | Men's winner | Women's winner |
|---|---|---|---|---|
| 2025 | 36h | 22 | Michael Carson · 329.207 km | Stephanie Rosebaugh · 276.984 km |
| 2024 | 36h | 23 | Wesley Smith · 247.497 km | Stephanie Rosebaugh · 229.329 km |
| 2023 | 27:20h | 21 | Michael McKnight · 222.166 km | Maia Detmer · 219.899 km |
| 2023 | 33:30h | 19 | Paul Nielsen · 225.935 km | Liz Derstine · 175.354 km |
| 2022 | 27:30h | 1 | Jeffrey Garmire · 185.460 km | — |
| 2020 | 32:15h | 14 | Anthony Tadajewski · 217.522 km | Maia Detmer · 209.091 km |
The field has held steady: 23 in 2024, 22 in 2025. 32% of the 2025 field were women.
DUV results for the 2025 edition (36h) — ranked runners only. Starters are not published, so the field was at least this big and no finish rate can be given.
The Aid Station
Course-specific beta from the community
With trail terrain, choose a shoe with moderate cushioning for optimal performance.
Gear for this race
Chosen for this trail race with 6 m of ascent.
- Trail Running Shoes Cushioning on trail that is still there in the last quarter.
- Race Nutrition Self-supported fuelling between aid stations.
- Hydration Vests Flask capacity without the bounce.
- Headlamps A 36 h limit puts you out there after dark.
- GPS Watches Battery life first — an ultra outlasts most full-GPS modes.
Similar races
Other trail ultras of the same format.